Albert -brisbane



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T O ALL WHOM IT MAY COlSlCEl-tNr Be it known that I, ALBERT BRISANE, of the city, county, and State of New York, have invent-ed a new anduseful Improvement in Wooden Pipes or Tubing; and I do hereby declare that the following is. a full, clear, and exact description thereof', which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this spcciiieation, in which- Figure 1 represents a Wooden pipe of my invention.

Figure 2 represents a mandrel or roller used for forming the pipe;

i Figure 3 represents one mode of forming the pipe on the mandrel.

Figure 4 represents a diierent mode of orming the pipe on the mandrel.

Similar letters of reference indicate likeparts.

This invention relates to an improvement in making wooden pipes or tubes, and consists in steaming, boiling, or otherwise softening thin boards or long strips of wood to render them pliant and ilexible, and bending them in cylindrical form longitudinally, so that the sides or edges shall meet or .lap upon` each other, and may be secured with rivets, wire, or hoops, or any other suitable Way for holding them together and preserving the tubular shape of the Wood.

For this purpose I employ any common kind of wood, hard or soft, such as oak, elm., poplar, hickory, bass, or cotton-wood, which is, sawed'or cut into boards or strips of any proper length and thickness, according to the size and purpose ofthe pipe. The edges of the boards are made bevelling to lap on each other, or rebated, or tongued and grooved, as desired, to unite and form a goed joint lengthwise of Jthe pipe. For bringing the boards or strips of wood into a cylindrical form they are first rendered pliant and iexible by steaming, boiling, or other means, and then bent on a proper mandrel or mouldadapted to the purpose. But the flexible properties of wood are peculiar, and different from those of iron and other metals of which tubing is generally made, and beyond a natural limit of ilcxiblity, differing in dili'erent kinds of wood, it can be bent without rupture of the fibre only by proceeding on one principle of operation. To bend a piece of wood successfully in a desired form beyond its natural limit` of exibility without breaking the fibre, the operation must commence at one fixed point, from which the iiexure must proceed continuously in such manner that the desired curve is held rigidly as it is formed. i

Acting on this principle lV have succeeded'in bending boards or long strips of wood in a perfectV cylindrical form, longitudinally, and thus making pipes or tubes suitable for various useful purposes, such as rain-water conductors, water pipes for supply and drain pipes, well tubing, `85e. The methods of bendingthe pipes I have employed are illustratcdin the drawings bygs. 2, 3, and 4. On. the side of a wooden or iron roller or mandrel, A, a recess a a, is made in a straight line from end to end, just deep enough at the hack part to form a shoulder for receiving the edge of the board B, as shown in gs.'2, 3and 4, and tapering off to nothing on the periphery .of the roller. At certain lregular distances apart are fastened thin metal plates, b b, which lap over the recessi a for holding the edge ofthe board when slipped under them for bending. A After the boa-rd has been steamed,

or otherwise rendered flexible, it is laid, whilelhot, lat upon a table or bench,and the edge being placed in the recess a a, under the lap plates b Z1, the mandrel A is rolled forward on the board B until the opposite edges meet, and are fastened with rivets or otherwise to make a finished pipe, as seen injg. 1. Or,as shown in iig. 4, the board maybe bent around the mandrel A, by placing it between the mandrel andanother roller which is hung so as to bear upon the board and'turn siniltaneously with the mandrel A. The mandrel on which the board is bent is made slightly tapering, and is easily removed from the tube formed upon it, after it has cooled, by slippingthe edge Ifrom under the lap plates 'and tapping it lightly at the smaller end. For riveting the nails .er rivets used te fasten the edges ,of theY tube a narrow strip of iron is inlaid in the recess d a, the rivets being plaeedbctwcen the lap plates b b. Sections of wooden pipe may be connected by screwing the ends together with slip-joints, couplingor in any suitable way.

Having thus described my invention, and the means of carryipg it into effect practically, what I claim as new, and desire to secure by Letters Patent, is

As a'new article of manufacture, wooden pipes or tubes formed by bending boards, slats, or strips of wood longitudinally, as herein described. i

The above specification of my invention signed by me this 30th day. of July, 1866. l A. BnrsnANE.

Witnesses:

WM. F. McNAMAnA, ALEX. F. Renners. 

